Patents by Inventor Charles J. Heiden

Charles J. Heiden has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electric loss shunting in a chiller-compressor-motor-drive system
    Patent number: 11916444
    Abstract: Disclosed is a hermetic AC electric motor that includes harmonics shunting such that high frequency harmonics are shunted from the AC electric motor without the use of one or more high frequency filters in the associated motor drive. A related method of operating an AC electric motor includes shunting high frequency harmonics to a fluid passing through the AC electric motor. Also disclosed is a simplified variable speed motor drive system which eliminates the need for a filter for removing high frequency harmonics.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: February 27, 2024
    Assignee: Trane International Inc.
    Inventors: Richard M. Heiden, Jay H. Johnson, Joseph M. Heger, Charles J. Peterson
  • Environmentally sealed inductive sensor assembly
    Patent number: 8259456
    Abstract: An exemplary embodiment of an inductive electrical sensor assembly includes a hollow housing structure defining an open space within the housing structure and a circuit board mounted in the open space. The circuit board includes an inductive sense area. A flexible metal domed spring structure is mounted over the inductive sensor area. A stem portion extends from a actuator area of the housing structure and having a distal end disposed adjacent to or in contact with the spring structure. The domed spring structure is adapted to be flexed toward the inductive sensor area by force exerted by the stem portion when a user exerts force on the actuator area, the flexing of the domed spring structure resulting in a change of inductance of the inductive sensor area which may be sensed to indicate an actuator push.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: September 4, 2012
    Assignee: Balboa Water Group, Inc.
    Inventors: Paul Rosenau, Charles J. Heiden
  • ENVIRONMENTALLY SEALED INDUCTIVE SENSOR ASSEMBLY
    Publication number: 20100320066
    Abstract: An exemplary embodiment of an inductive electrical sensor assembly includes a hollow housing structure defining an open space within the housing structure and a circuit board mounted in the open space. The circuit board includes an inductive sense area. A flexible metal domed spring structure is mounted over the inductive sensor area. A stem portion extends from a actuator area of the housing structure and having a distal end disposed adjacent to or in contact with the spring structure. The domed spring structure is adapted to be flexed toward the inductive sensor area by force exerted by the stem portion when a user exerts force on the actuator area, the flexing of the domed spring structure resulting in a change of inductance of the inductive sensor area which may be sensed to indicate an actuator push.
    Type: Application
    Filed: June 23, 2009
    Publication date: December 23, 2010
    Inventors: Paul Rosenau, Charles J. Heiden